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Alberto R. Role of Pure Technetium Chemistry: Are There Still Links to Applications in Imaging? Inorg Chem 2023; 62:20539-20548. [PMID: 37417737 PMCID: PMC10731660 DOI: 10.1021/acs.inorgchem.3c01620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Indexed: 07/08/2023]
Abstract
The discovery and development of new 99mTc-based radiopharmaceuticals or labeled drugs in general is based on innovative, pure chemistry and subsequent, application-targeted research. This was the case for all currently clinically applied imaging agents. Most of them were market-introduced some 20 years ago, and the few more recent ones are based on even older chemistry, albeit technetium chemistry has made substantial progress over the last 20 years. This progress though is not mirrored by new molecular imaging agents and is even accompanied by a steady decrease in the number of groups active in pure and applied technetium chemistry, a contrast to the trends in most other fields in which d-elements play a central role. The decrease in research with technetium has been partly counterbalanced by a strong increase of research activities with homologous, cold rhenium compounds for therapy, disclosing in the future eventually a quite unique opportunity for theranostics. This Viewpoint analyzes the pathways that led to radiopharmaceuticals in the past and their underlying fundamental contributions. It attempts to tackle the question of why new chemistry still does not lead to new imaging agents, i.e., the question of whether pure technetium chemistry is still needed at all.
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Affiliation(s)
- Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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2
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Metallo-antiviral aspirants: Answer to the upcoming virusoutbreak. EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY REPORTS 2023; 8:100104. [PMID: 37035854 PMCID: PMC10070197 DOI: 10.1016/j.ejmcr.2023.100104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 03/27/2023] [Accepted: 04/02/2023] [Indexed: 04/07/2023]
Abstract
In light of the current SARS-CoV-2 outbreak, about one million research papers (articles, reviews, communications, etc.) were published in the last one and a half years. It was also noticed that in the past few years; infectious diseases, mainly those of viral origin, burdened the public health systems worldwide. The current wave of the Covid-19 pandemic has unmasked critical demand for compounds that can be swiftly mobilized for the treatment of re-emerging or emerging viral infections. With the potential chemical and structural characteristics of organic motifs, the coordination compounds might be a promising and flexible option for drug development. Their therapeutic consequence may be tuned by varying metal nature and its oxidation number, ligands characteristics, and stereochemistry of the species formed. The emerging successes of cisplatin in cancer chemotherapy inspire researchers to make new efforts for studying metallodrugs as antivirals. Metal-based compounds have immense therapeutic potential in terms of structural diversity and possible mechanisms of action; therefore, they might offer an excellent opportunity to achieve new antivirals. This review is an attempt to summarize the current status of antiviral therapies against SARS-CoV-2 from the available literature sources, discuss the specific challenges and solutions in the development of metal-based antivirals, and also talk about the possibility to accelerate discovery efforts in this direction.
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Ribeiro E, Costa B, Vasques-Nóvoa F, Vale N. In Vitro Drug Repurposing: Focus on Vasodilators. Cells 2023; 12:cells12040671. [PMID: 36831338 PMCID: PMC9954697 DOI: 10.3390/cells12040671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Drug repurposing aims to identify new therapeutic uses for drugs that have already been approved for other conditions. This approach can save time and resources compared to traditional drug development, as the safety and efficacy of the repurposed drug have already been established. In the context of cancer, drug repurposing can lead to the discovery of new treatments that can target specific cancer cell lines and improve patient outcomes. Vasodilators are a class of drugs that have been shown to have the potential to influence various types of cancer. These medications work by relaxing the smooth muscle of blood vessels, increasing blood flow to tumors, and improving the delivery of chemotherapy drugs. Additionally, vasodilators have been found to have antiproliferative and proapoptotic effects on cancer cells, making them a promising target for drug repurposing. Research on vasodilators for cancer treatment has already shown promising results in preclinical and clinical studies. However, additionally research is needed to fully understand the mechanisms of action of vasodilators in cancer and determine the optimal dosing and combination therapy for patients. In this review, we aim to explore the molecular mechanisms of action of vasodilators in cancer cell lines and the current state of research on their repurposing as a treatment option. With the goal of minimizing the effort and resources required for traditional drug development, we hope to shed light on the potential of vasodilators as a viable therapeutic strategy for cancer patients.
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Affiliation(s)
- Eduarda Ribeiro
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Bárbara Costa
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Francisco Vasques-Nóvoa
- Cardiovascular R&D Center, Faculty of Medicine, University of Porto, Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
| | - Nuno Vale
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- Correspondence: ; Tel.: +351-220426537
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Gao B, Wang X, Wang M, You K, Ahmed Suleiman GS, Ren XK, Guo J, Xia S, Zhang W, Feng Y. Superlow Dosage of Intrinsically Bioactive Zinc Metal-Organic Frameworks to Modulate Endothelial Cell Morphogenesis and Significantly Rescue Ischemic Disease. ACS NANO 2022; 16:1395-1408. [PMID: 35006685 DOI: 10.1021/acsnano.1c09427] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Despite long-term efforts for ischemia therapy, proangiogenic drugs hardly satisfy therapy/safety/cost/mass production multiple evaluations and meanwhile with a desire to minimize dosages, thereby clinical applications have been severely hampered. Recently, metal ion-based therapy has emerged as an effective strategy. Herein, intrinsically bioactive Zn metal-organic frameworks (MOFs) were explored by bridging the dual superiorities of proangiogenic Zn2+ and facile/cost-effective/scalable MOFs. Zn-MOFs could enhance the morphogenesis of vascular endothelial cells (ECs) via the PI3K/Akt/eNOS pathway. However, high dosage is inevitable and Zn-MOFs suffer from insolubility and low stability, which lead to the bioaccumulation of Zn-MOFs and seriously potential toxicity risks. To alleviate this, it is required to decrease the dosage, but this can be entrapped into the dosage/therapy/safety contradiction and disappointing therapy effect. To address these challenges, the bioavailability of Zn-MOFs is urgent to improve for the minimization of dosage and significant therapy/safety. The mitochondrial respiratory chain is Zn2+ active, which inspired us to codecorate EC-targeted and mitochondria-localizing-sequence peptides onto Zn-MOF surfaces. Interestingly, after codecoration, a 100-fold reduced dosage acquired equally powerful vascularization, and the superlow dosage significantly rescued ischemia (4.4 μg kg-1, about one order of magnitude lower than the published minimal value). Additionally, no obvious muscle injury was found after treatment. Potential toxicity risks were alleviated, benefiting from the superlow dosage. This advanced drug simultaneously satisfied comprehensive evaluations and dosage minimization. This work utilizes engineering thought to rationally design "all-around" bioactive MOFs and is expected to be applied for ischemia treatment.
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Affiliation(s)
- Bin Gao
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Xiaoyu Wang
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Meiyu Wang
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Kexin You
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Gasim Sebit Ahmed Suleiman
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Xiang-Kui Ren
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Weijin Road 92, Tianjin 300072, China
| | - Jintang Guo
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Weijin Road 92, Tianjin 300072, China
| | - Shihai Xia
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People's Armed Police Force, 220 Chenglin Road, Tianjin 300162, China
| | - Wencheng Zhang
- Department of Physiology and Pathophysiology, Logistics University of Chinese People's Armed Police Force, Tianjin 300309, China
| | - Yakai Feng
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Weijin Road 92, Tianjin 300072, China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, China
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5
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Affiliation(s)
- Xin‐Xin Peng
- Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Chengfu Road 292, Haidian district Beijing 100871 R. P. China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Chengfu Road 292, Haidian district Beijing 100871 R. P. China
- Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515031 P. R. China
- Spin-X Institute, School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 P. R. China
- Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials Guangzhou 510641 P. R. China
| | - Jun‐Long Zhang
- Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Chengfu Road 292, Haidian district Beijing 100871 R. P. China
- Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515031 P. R. China
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Sibuyi NRS, Moabelo KL, Fadaka AO, Meyer S, Onani MO, Madiehe AM, Meyer M. Multifunctional Gold Nanoparticles for Improved Diagnostic and Therapeutic Applications: A Review. NANOSCALE RESEARCH LETTERS 2021; 16:174. [PMID: 34866165 PMCID: PMC8645298 DOI: 10.1186/s11671-021-03632-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/21/2021] [Indexed: 05/07/2023]
Abstract
The medical properties of metals have been explored for centuries in traditional medicine for the treatment of infections and diseases and still practiced to date. Platinum-based drugs are the first class of metal-based drugs to be clinically used as anticancer agents following the approval of cisplatin by the United States Food and Drug Administration (FDA) over 40 years ago. Since then, more metals with health benefits have been approved for clinical trials. Interestingly, when these metals are reduced to metallic nanoparticles, they displayed unique and novel properties that were superior to their bulk counterparts. Gold nanoparticles (AuNPs) are among the FDA-approved metallic nanoparticles and have shown great promise in a variety of roles in medicine. They were used as drug delivery, photothermal (PT), contrast, therapeutic, radiosensitizing, and gene transfection agents. Their biomedical applications are reviewed herein, covering their potential use in disease diagnosis and therapy. Some of the AuNP-based systems that are approved for clinical trials are also discussed, as well as the potential health threats of AuNPs and some strategies that can be used to improve their biocompatibility. The reviewed studies offer proof of principle that AuNP-based systems could potentially be used alone or in combination with the conventional systems to improve their efficacy.
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Affiliation(s)
- Nicole Remaliah Samantha Sibuyi
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
| | - Koena Leah Moabelo
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
- Nanobiotechnology Research Group, Department of Biotechnology, University of the Western Cape, Bellville, South Africa
| | - Adewale Oluwaseun Fadaka
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa
| | - Samantha Meyer
- Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| | - Martin Opiyo Onani
- Organometallics and Nanomaterials, Department of Chemical Sciences, University of the Western Cape, Bellville, South Africa
| | - Abram Madimabe Madiehe
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.
- Nanobiotechnology Research Group, Department of Biotechnology, University of the Western Cape, Bellville, South Africa.
| | - Mervin Meyer
- Department of Science and Innovation (DSI)/Mintek Nanotechnology Innovation Centre (NIC) Biolabels Node, Department of Biotechnology, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa.
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Development of Protein Capped Nano Gold for NIR Photothermal and Molecular Imaging Applications for Diagnosis of Cancer Cells: In Vitro Studies. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02179-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kotilea K, Cadranel S, Salame A, Nguyen J, Mahler T, Miendje Deyi VY, Verset L, Bontems P. Efficacy and safety of bismuth-based quadruple therapy for Helicobacter pylori eradication in children. Helicobacter 2021; 26:e12825. [PMID: 34101296 DOI: 10.1111/hel.12825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/19/2021] [Accepted: 04/09/2021] [Indexed: 01/01/2023]
Abstract
OBJECTIVES To evaluate the efficacy and safety of a 10-day quadruple therapy containing colloidal bismuth sub-citrate (CBS), esomeprazole (ESO), amoxicillin (AMO), and metronidazole (MET) for Helicobacter pylori (H. pylori) eradication in children. METHODS Monocentric, open-label, prospective, single-arm clinical trial in children aged 6-17 years with H. pylori infection. The study was carried out on consecutive patients with upper gastrointestinal symptoms and H. pylori infection confirmed by histology and culture of gastric biopsies. The outcome was evaluated using a 13 C-urea breath test 8-10 weeks post-therapy. Adverse events and compliance were evaluated by daily journal and pill counting. RESULTS A total of 36 children fulfilling the inclusion criteria were enrolled. Eight (22.2%) of them had a prior H. pylori eradication treatment. Thirteen (36.1%) patients were infected by a strain resistant to MET and 8 (22.2%) by a strain resistant to both MET and Clarithromycin (CLA). In the intention-to-treat population (ITT), eradication was achieved in 35/36 patients (95%CI: 85%-99%). Twenty-three children reported at least one adverse event (63.8%), mostly mild (nausea, vomiting, abdominal pain, diarrhea, dark stool, metallic taste, headache, and rash). The compliance rate was high, with 30 (83.3%) patients taking >90% of the treatment. CONCLUSION 10-day quadruple therapy containing CBS, ESO, AMO, and MET for H. pylori eradication in children is a safe and very effective solution, especially for previously treated patients and those infected with double resistant strains.
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Affiliation(s)
- Kallirroi Kotilea
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - Samy Cadranel
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - Assaad Salame
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - Julie Nguyen
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - Tania Mahler
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - Véronique Yvette Miendje Deyi
- Porte de Hal Campus (Central Lab), LHUB-ULB, Laboratoire Hospitalier Universitaire de Bruxelles, (Brussels Academic Hospital Lab), Horta, Schaerbeek and Porte de Hal Campus, Brussels, Belgium
| | | | - Patrick Bontems
- Pediatric Gastroenterology, Hepatology and Obesity, HUDERF, Queen Fabiola Children's University Hospital, Université libre de Bruxelles, Brussels, Belgium
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Li Y, Yi S, Lei Z, Xiao Y. Amphiphilic polymer-encapsulated Au nanoclusters with enhanced emission and stability for highly selective detection of hypochlorous acid. RSC Adv 2021; 11:14678-14685. [PMID: 35423968 PMCID: PMC8698203 DOI: 10.1039/d1ra01634b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/13/2021] [Indexed: 11/21/2022] Open
Abstract
It is of vital importance to develop probes to monitor hypochlorous acid (HClO) in biological systems as HClO is associated with many important physiological and pathological processes. Metal nanoclusters (NCs) are promising luminescent nanomaterials for highly reactive oxygen species (hROS) detection on the basis of their strong reaction ability with hROS. However, metal NCs typically can respond to most common hROS and are susceptible to etching by biothiols, hindering their application in the construction of effective HClO probes. Herein, we proposed a strategy to develop a nanoprobe based on Au NCs for highly sensitive and selective detection of HClO. We synthesized luminescent benzyl mercaptan-stabilized Au NCs and encapsulated them with an amphiphilic polymer (DSPE-PEG). After encapsulation, an obvious emission enhancement and good resistance to the etching by biothiols for Au NCs were achieved. More importantly, the DSPE-PEG encapsulated Au NCs can be used as a nanoprobe for detection of HClO with good performance. The luminescence of the Au NCs was effectively and selectively quenched by HClO. A good linear relationship with the concentration of HClO in the range of 5–35 μM and a limit of detection (LOD) of 1.4 μM were obtained. Additionally, this nanoprobe was successfully used for bioimaging and monitoring of HClO changes in live cells, suggesting the application potential of the as-prepared amphiphilic polymer-encapsulated Au NCs for further HClO-related biomedical research. Amphiphilic polymer-encapsulated Au nanoclusters with enhanced emission and stability were synthesized and used for the sensitive and selective detection of hypochlorous acid.![]()
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Affiliation(s)
- Yiling Li
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University Wuhan 430062 China
| | - Shuxiao Yi
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University Wuhan 430062 China
| | - Zhongli Lei
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University Wuhan 430062 China
| | - Yan Xiao
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University Wuhan 430062 China
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Srivastava VK. Synthesis, characterization, and biological studies of some biometal complexes. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00191-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Abstract
Background
Metal complexes Cu[C13H8O4N]22, Ni[Cl3H8O4N]23, and Co[C13H8O4N]24 of bioinorganic relevance have been synthesized with the Schiff base ligand 2-furylglyoxal–anthranilic acid (FGAA) [C13H9O4N] 1.
All the complexes are well characterized by various spectral and physical methods. The antimicrobial activity of the complexes has been studied against some of the pathogenic bacteria and fungi.
Results
Results indicate that complexes have higher antimicrobial activity than the free ligand. This would suggest that chelation reduces considerably the polarity of the metal ions in the complexes which in turn increases the hydrophobic character of the chelate and thus enables permeation, through the lipid layer of microorganisms. All the complexes were assessed for their anticancer studies against a panel of selected cancer cells HOP62 and BT474 respectively. Results showed that the complexes are promising chemotherapeutic alternatives in the search of anticancer agents. The fluorescence quenching phenomenon is observed in the Schiff base metal complexes.
Conclusion
The octahedral transition metal complexes 2, 3, and 4 have been obtained by treatment of ligand 2-furylglyoxal-anthranilic acid (FGAA) 1 with metal acetate. Complexes under investigations have shown antimicrobial, potential anticancer, and the DNA binding studies.
Graphical abstract
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Zheng Q, Ding F, Hu X, Feng J, Shen J, He X. ESIPT-based fluorescent probe for bioimaging and identification of group IIIA ions in live cells and zebrafish. Bioorg Chem 2021; 109:104746. [PMID: 33639363 DOI: 10.1016/j.bioorg.2021.104746] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/07/2021] [Accepted: 02/10/2021] [Indexed: 02/07/2023]
Abstract
Aluminum (Al), gallium (Ga), indium (In) are three essential elements in group IIIA of the periodic table, which all share similar chemical properties and are also vital in many aspects of bio- and environmental systems. Proper control of their levels is thus necessary as overexposure to them has been linked to onsets of many diseases. Fluorescence based molecular probes have always been the driving horse for detecting vital ions including group IIIA ions. However, only a few such probes have been reported so far and all of them are faced with one or more shortcomings such as not very high sensitivity, incapability to detect multiple ions simultaneously, and poor cell penetration abilities due to emitted fluorescence at shorter wavelengths. To meet those challenges, we herein presented the successful development and application of a novel group IIIA ions fluorescent probe, NBD-hnap, in live RAW264.7 cell and zebrafish models, especially the imaging of ocular tumor cell OCM-1 (human choroid melanoma cells). NBD-hnap was synthesized by a simple conjugation of NBD and hnap molecules under suitable conditions. Subsequent experimental analysis and theoretical calculations confirmed that NBD-hnap forms a 1:1 chelate with each of three selected group IIIA ions. Further evaluation proved that NBD-hnap can realize highly sensitive [LODs of 113, 82 and 150 nM for Al(III), Ga(III), and In(III) respectively in aqueous solutions] and highly selective (over a dozen of interfering cations) through an ESIPT-based fluorescent sensing mechanism with strong far-red emission around 640 nm. Those value merits make NBD-hnap superior to other group IIIA ion probes reported before and NBD-hnap is thus expected to find wider and greater applications in the near future.
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Affiliation(s)
- Qinxiang Zheng
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Feng Ding
- Department of Microbiology & Immunology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xiaojuan Hu
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jiayao Feng
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China.
| | - Xiaojun He
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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Asfaw A, MacFarlane WR, Beauchemin D. Preconcentration of noble metals on alumina prior to analysis by inductively coupled plasma mass spectrometry: Application to geological samples. Anal Chim Acta 2020; 1136:151-156. [PMID: 33081939 DOI: 10.1016/j.aca.2020.09.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/08/2020] [Accepted: 09/21/2020] [Indexed: 11/30/2022]
Abstract
A preconcentration method for the determination of noble metals (Ag, Au, Ir, Os, Pd, Pt, Re, Rh, Ru) was developed using alumina as a sorbent. The method involves an off-line preconcentration analytical procedure: the formation of chloro-complexes of these elements with HCl, loading of the chloro-complexes on alumina followed by elution of analytes and analysis by inductively coupled plasma mass spectrometry. The effects of HCl/HNO3 concentration in the sample digest, mass of alumina, and concentration of eluents (HCl and HNO3)/thiourea were studied using multivariate experimental designs. Using 2 M HCl as eluent, detection limits were improved by a factor of 10-20 for Ag, Ir, Os, Pd, Pt, and Ru, and 3-5 for Re and Rh compared to those achieved by direct nebulization (i.e. without preconcentration). Accuracy was verified through analysis of CDN-PGMS-19 ore reference material. Using 2 M HCl for elution, the results for Ag, Pd and Pt agreed with the reference values obtained based on aqua regia digestion (which does not achieve total dissolution). For the determination of Au, evaporation of HNO3 and elution with thiourea were required.
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Affiliation(s)
- Alemayehu Asfaw
- Queen's University, Department of Chemistry, 90 Bader Lane, Kingston, ON, K7L 3N6, Canada
| | | | - Diane Beauchemin
- Queen's University, Department of Chemistry, 90 Bader Lane, Kingston, ON, K7L 3N6, Canada.
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Feng L, Pomel S, Latre de Late P, Taravaud A, Loiseau PM, Maes L, Cho-Ngwa F, Bulman CA, Fischer C, Sakanari JA, Ziniel PD, Williams DL, Davioud-Charvet E. Repurposing Auranofin and Evaluation of a New Gold(I) Compound for the Search of Treatment of Human and Cattle Parasitic Diseases: From Protozoa to Helminth Infections. Molecules 2020; 25:molecules25215075. [PMID: 33139647 PMCID: PMC7663263 DOI: 10.3390/molecules25215075] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/25/2020] [Accepted: 10/27/2020] [Indexed: 12/12/2022] Open
Abstract
Neglected parasitic diseases remain a major public health issue worldwide, especially in tropical and subtropical areas. Human parasite diversity is very large, ranging from protozoa to worms. In most cases, more effective and new drugs are urgently needed. Previous studies indicated that the gold(I) drug auranofin (Ridaura®) is effective against several parasites. Among new gold(I) complexes, the phosphole-containing gold(I) complex {1-phenyl-2,5-di(2-pyridyl)phosphole}AuCl (abbreviated as GoPI) is an irreversible inhibitor of both purified human glutathione and thioredoxin reductases. GoPI-sugar is a novel 1-thio-β-d-glucopyranose 2,3,4,6-tetraacetato-S-derivative that is a chimera of the structures of GoPI and auranofin, designed to improve stability and bioavailability of GoPI. These metal-ligand complexes are of particular interest because of their combined abilities to irreversibly target the essential dithiol/selenol catalytic pair of selenium-dependent thioredoxin reductase activity, and to kill cells from breast and brain tumors. In this work, screening of various parasites—protozoans, trematodes, and nematodes—was undertaken to determine the in vitro killing activity of GoPI-sugar compared to auranofin. GoPI-sugar was found to efficiently kill intramacrophagic Leishmania donovani amastigotes and adult filarial and trematode worms.
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Affiliation(s)
- Liwen Feng
- UMR 7042 CNRS-Université de Strasbourg-Université Haute-Alsace, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Bioorganic and Medicinal Chemistry Team, European School of Chemistry, Polymers and Materials (ECPM), 25, rue Becquerel, F-67087 Strasbourg, France;
| | - Sébastien Pomel
- BioCIS, Faculty of Pharmacy, Université Paris-Saclay, CNRS, 92290 Châtenay-Malabry, France; (S.P.); (A.T.); (P.M.L.)
| | - Perle Latre de Late
- INSERM U1016, CNRS UMR 8104, Laboratoire de Biologie Cellulaire Comparative des Apicomplexes, Cochin Institute, Faculté de Medecine, Université Paris Descartes, Sorbonne Paris Cité, 75014 Paris, France;
| | - Alexandre Taravaud
- BioCIS, Faculty of Pharmacy, Université Paris-Saclay, CNRS, 92290 Châtenay-Malabry, France; (S.P.); (A.T.); (P.M.L.)
| | - Philippe M. Loiseau
- BioCIS, Faculty of Pharmacy, Université Paris-Saclay, CNRS, 92290 Châtenay-Malabry, France; (S.P.); (A.T.); (P.M.L.)
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium;
| | - Fidelis Cho-Ngwa
- Biotechnology Unit, Faculty of Science, University of Buea, Buea P.O. Box 63, Cameroon;
| | - Christina A. Bulman
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158, USA; (C.A.B.); (C.F.); (J.A.S.)
| | - Chelsea Fischer
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158, USA; (C.A.B.); (C.F.); (J.A.S.)
| | - Judy A. Sakanari
- Department of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158, USA; (C.A.B.); (C.F.); (J.A.S.)
| | - Peter D. Ziniel
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA;
| | - David L. Williams
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA;
- Correspondence: (D.L.W.); (E.D.-C.)
| | - Elisabeth Davioud-Charvet
- UMR 7042 CNRS-Université de Strasbourg-Université Haute-Alsace, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Bioorganic and Medicinal Chemistry Team, European School of Chemistry, Polymers and Materials (ECPM), 25, rue Becquerel, F-67087 Strasbourg, France;
- Correspondence: (D.L.W.); (E.D.-C.)
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Karakka Kal AK, Perwad Z, K Karatt T, Nalakath J, Subhahar M. Using Inductively Coupled Plasma Mass Spectrometry to Assess Essential and Performance-Enhancing Metals in the Urine of Racehorses. J Anal Toxicol 2020; 44:490-498. [PMID: 32020176 DOI: 10.1093/jat/bkaa004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 11/14/2019] [Accepted: 12/30/2019] [Indexed: 12/23/2022] Open
Abstract
Recently, an increased tendency to use various metals has been observed in the sports competition fields. Many of these metals and their organic complexes reportedly have good pharmacologic, therapeutic and performance-enhancement uses; they are banned or recommended as controlled medications in competitive sports. The objective of this research was to determine the concentration of pharmacologically relevant metals in urine samples collected from racehorses at various sport events, develop a method and assess the concentrations of above metals using inductively coupled plasma mass spectrometry (ICP-MS). Seven alkali-alkaline earth metals (lithium, sodium, potassium, magnesium, calcium, strontium and barium) and six heavy metals (chromium, cobalt, copper, zinc, arsenic and selenium) were studied in detail. To compare and confirm the concentrations of these metals, the screening was carried out on the basis of region and sex of the animal. ICP-MS provides extremely high sensitivity that enables the determination of the metals at very low concentration from complex biological matrices. From the research, it is clear that irrespective of sex and region the concentration of metal is very high in some samples, might be accidental or intentional doping to improve sporting performances. This research work is of significant importance in setting threshold values for screening metals in race day samples in order to avoid potential harmful effects on athletes and the depth of malpractices, it can bring to sports.
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Affiliation(s)
- Abdul Khader Karakka Kal
- Equine Forensic Unit, Central Veterinary Research Laboratory, Zabeel-2, PO Box 597, Dubai, United Arab Emirates
| | - Zubair Perwad
- Equine Forensic Unit, Central Veterinary Research Laboratory, Zabeel-2, PO Box 597, Dubai, United Arab Emirates
| | - Tajudheen K Karatt
- Equine Forensic Unit, Central Veterinary Research Laboratory, Zabeel-2, PO Box 597, Dubai, United Arab Emirates
| | - Jahfar Nalakath
- Equine Forensic Unit, Central Veterinary Research Laboratory, Zabeel-2, PO Box 597, Dubai, United Arab Emirates
| | - Michael Subhahar
- Equine Forensic Unit, Central Veterinary Research Laboratory, Zabeel-2, PO Box 597, Dubai, United Arab Emirates
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15
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Misirlic-Dencic S, Poljarevic J, Isakovic AM, Sabo T, Markovic I, Trajkovic V. Current Development of Metal Complexes with Diamine Ligands as Potential Anticancer Agents. Curr Med Chem 2020; 27:380-410. [DOI: 10.2174/0929867325666181031114306] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/20/2018] [Accepted: 09/22/2018] [Indexed: 01/21/2023]
Abstract
Background::
The discovery of cisplatin and the subsequent research revealed the importance
of dinitrogen-containing moiety for the anticancer action of metal complexes. Moreover, certain
diamine ligands alone display cytotoxicity that contributes to the overall activity of corresponding
complexes.
Objective::
To summarize the current knowledge on the anticancer efficacy, selectivity, and the mechanisms
of action of metal complexes with various types of diamine ligands.
Method::
The contribution of aliphatic acyclic, aliphatic cyclic, and aromatic diamine ligands to the
anticancer activity and selectivity/toxicity of metal complexes with different metal ions were analyzed
by comparison with organic ligand alone and/or conventional platinum-based chemotherapeutics.
Results::
The aliphatic acyclic diamine ligands are present mostly in complexes with platinum. Aliphatic
cyclic diamines are part of Pt(II), Ru(II) and Au(III) complexes, while aromatic diamine ligands
are found in Pt(II), Ru(II), Pd(II) and Ir(III) complexes. The type and oxidation state of metal ions
greatly influences the cytotoxicity of metal complexes with aliphatic acyclic diamine ligands. Lipophilicity
of organic ligands, dependent on alkyl-side chain length and structure, determines their cellular
uptake, with edda and eddp/eddip ligands being most useful in this regard. Aliphatic cyclic diamine
ligands improved the activity/toxicity ratio of oxaliplatin-type complexes. The complexes with aromatic
diamine ligands remain unexplored regarding their anticancer mechanism. The investigated complexes
mainly caused apoptotic or necrotic cell death.
Conclusion::
Metal complexes with diamine ligands are promising candidates for efficient and more
selective alternatives to conventional platinum-based chemotherapeutics. Further research is required to
reveal the chemico-physical properties and molecular mechanisms underlying their biological activity.
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Affiliation(s)
- Sonja Misirlic-Dencic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, Belgrade 11,000, Serbia
| | - Jelena Poljarevic
- Faculty of Chemistry, University of Belgrade, Belgrade 11,000, Serbia
| | - Andjelka M. Isakovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, Belgrade 11,000, Serbia
| | - Tibor Sabo
- Faculty of Chemistry, University of Belgrade, Belgrade 11,000, Serbia
| | - Ivanka Markovic
- Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade, Pasterova 2, Belgrade 11,000, Serbia
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade 11,000, Serbia
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Zhang M, Ye J, Li C, Xia Y, Wang Z, Feng J, Zhang X. Cytomembrane-Mediated Transport of Metal Ions with Biological Specificity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900835. [PMID: 31508286 PMCID: PMC6724363 DOI: 10.1002/advs.201900835] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/10/2019] [Indexed: 05/17/2023]
Abstract
Metal ions are of significant importance in biomedical science. This study reports a new concept of cytomembrane-mediated biospecific transport of metal ions without using any other materials. For the first time, cytomembranes are exploited for two-step conjugation with metal ions to provide hybrid nanomaterials. The innate biofunction of cell membranes renders the hybrids with superior advantages over common vehicles for metal ions, including excellent biocompatibility, low immunogenic risk, and particularly specific biotargeting functionality. As a proof-of-concept demonstration, cancer cell membranes are used for in vivo delivery of various metal ions, including ruthenium, europium, iron, and manganese, providing a series of tumor-targeted nanohybrids capable of photothermal therapy/imaging, magnetic resonance imaging, photoacoustic imaging, and fluorescence imaging with improved performances. In addition, the special structure of the cell membrane allows easy accommodation of small-molecular agents within the nanohybrids for effective chemotherapy. This study provides a new class of metal-ion-included nanomaterials with versatile biofunctions and offers a novel solution to address the important challenge in the field of in vivo targeted delivery of metal ions.
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Affiliation(s)
- Ming‐Kang Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Jing‐Jie Ye
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Chu‐Xin Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Yu Xia
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Zi‐Yang Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Jun Feng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
| | - Xian‐Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of ChemistryWuhan UniversityWuhan430072P.R. China
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Ko SW, Kim YJ, Chung WC, Lee SJ. Bismuth supplements as the first-line regimen for Helicobacter pylori eradication therapy: Systemic review and meta-analysis. Helicobacter 2019; 24:e12565. [PMID: 30698318 DOI: 10.1111/hel.12565] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS An increase in the use of antibiotics leads to increased antibiotic resistance of Helicobacter pylori (H pylori). Consequently, it has been considered that the first-line standard regimen should be changed. The main purpose of this study was to evaluate the efficacy of nonantibiotic (bismuth) supplements as a first-line regimen for H pylori eradication. METHODS We searched PubMed, EMBASE, CINAHL, and the Cochrane Library databases for randomized controlled trials (RCTs) reported in English and undertaken up until August 2018. A meta-analysis of all randomized controlled trials comparing bismuth supplements with non-bismuth-containing regimens in H pylori eradication was performed. RCTs of classic bismuth-containing quadruple therapy as a first-line regimen were excluded. RESULTS We identified twenty-five randomized trials (3990 patients), and the total H pylori eradication rate, according to per protocol analyzed, was 85.8%. The odds ratio was 1.83 (95% confidence interval (CI). 1.57-2.13). Among these RCTs, there were 7 RCTs for bismuth add-on therapy, and the odds ratio was 2.81 (95% CI. 2.03-3.89). When the studies were performed in a high clarithromycin resistance area (≥15%) or included patients with clarithromycin resistance, bismuth-containing regimens were superior to non-bismuth regimens. Moreover, the incidence of total side effects was insignificant. CONCLUSIONS Bismuth supplements as a first-line regimen could be effective, with bismuth add-on regimens being the most effective. Particularly, bismuth supplements showed the potential efficacy for clarithromycin-resistant strains and would be the most viable alternative in clinical practice.
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Affiliation(s)
- Sung Woo Ko
- Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea, Seoul, Korea
| | - Yeon-Ji Kim
- Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea, Seoul, Korea
| | - Woo Chul Chung
- Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea, Seoul, Korea
| | - Seung Jae Lee
- Medical Library, The Catholic University of Korea, Seoul, Korea
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18
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Zong Z, Wei X, Yan X, Fan Y. Crystal structures and anticancer activities of five novel pyrazolone-enamine transition metal complexes with 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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19
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Gd-DTPA-dialkylamine derivatives: Synthesis and self-assembled behaviors for T1-enhanced magnetic resonance imaging and drug carriers. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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20
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Abstract
Bismuth salts exert their activity within the upper gastrointestinal tract through action of luminal bismuth. Bismuth exerts direct bactericidal effect on Helicobacter pylori by different ways: forms complexes in the bacterial wall and periplasmic space, inhibits different enzymes, ATP synthesis, and adherence of the bacteria to the gastric mucosa. Bismuth also helps ulcer healing by acting as a barrier to the aggressive factors and increasing mucosal protective factors such as prostaglandin, epidermal growth factor, and bicarbonate secretion. To date, no resistance to bismuth has been reported. Also synergism between bismuth salts and antibiotics was present. It was shown that metronidazole and clarithromycin resistant H. pylori strains become susceptible if they are administered together with bismuth. Bismuth-containing quadruple therapy was recommended both by the Second Asia-Pacific Consensus Guidelines and by the Maastricht IV/Florence Consensus Report as an alternative first choice regimen to standard triple therapy, in areas with low clarithromycin resistance, and it is recommended as the first-line therapeutic option in areas with a high prevalence of clarithromycin resistance. Greater than 90% eradication success can be obtained by bismuth-containing quadruple therapy. Choosing bismuth as an indispensable part of first-line therapy is logical as both metronidazole and clarithromycin resistances can be overcome by adding bismuth to the regimen.
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21
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Kotyńska J, Figaszewski ZA. Binding of trivalent metal ions (Al 3+, In 3+, La 3+) with phosphatidylcholine liposomal membranes investigated by microelectrophoresis. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2018; 41:70. [PMID: 29802496 DOI: 10.1140/epje/i2018-11679-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Interactions between trivalent metal ions (Al3+, In3+, La3+) and phosphatidylcholine (PC) liposomes are studied by microelectrophoresis. The dependence of the PC membrane surface charge density and zeta potential on [Formula: see text] ([Formula: see text] range from 2 to 10) of the aqueous metal chloride solutions is determined. The obtained results indicate the adsorption of Al3+, In3+ and La3+ ions on phosphatidylcholine model membranes, leading to changes in the electrical properties of the membranes. The theoretical considerations on equilibria occurring between phosphatidylcholine liposomal membrane and trivalent metal ions are presented. A mathematical model describing the interactions in a quantitative way is proposed.
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Affiliation(s)
- Joanna Kotyńska
- Institute of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245, Bialystok, Poland.
| | - Zbigniew A Figaszewski
- Institute of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245, Bialystok, Poland
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22
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Biswas A, Banerjee S, Gart EV, Nagaraja AT, McShane MJ. Gold Nanocluster Containing Polymeric Microcapsules for Intracellular Ratiometric Fluorescence Biosensing. ACS OMEGA 2017; 2:2499-2506. [PMID: 30023667 PMCID: PMC6044823 DOI: 10.1021/acsomega.7b00199] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/26/2017] [Indexed: 05/31/2023]
Abstract
A new approach to sensing and imaging hydrogen peroxide (H2O2) was developed using microcapsule-based dual-emission ratiometric luminescent biosensors. Bovine serum albumin-capped gold nanoclusters (BSA-AuNCs) sensitive to H2O2 were coencapsulated with insensitive FluoSpheres (FSs) within polymeric capsules fabricated via the layer-by-layer method. Under single-wavelength excitation, the microcapsule-based biosensors exhibited emission bands at ∼516 and ∼682 nm resulting from the FSs and BSA-AuNCs, respectively. The polyelectrolyte multilayers lining the microcapsules were effective in protecting BSA-AuNCs from the degradation catalyzed by proteases (chymotrypsin, trypsin, papain, and proteinase K) and subsequent luminescent quenching, overcoming a key limitation of prior BSA-AuNC-based sensing systems. The luminescent response of the sensors was also found to be independent of local changes in pH (5-9). Quenching of the AuNCs in the presence of H2O2 enabled the spectroscopic quantification and imaging of changes in H2O2 concentration from 0 to 1 mM. The microcapsule sensors were easily phagocytized by murine macrophage cells (RAW 264.7), were effective as intracellular H2O2 imaging probes, and were successfully used to detect local release of H2O2 in response to an external chemical stimulus.
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Affiliation(s)
- Aniket Biswas
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Swayoma Banerjee
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Elena V. Gart
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Ashvin T. Nagaraja
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Michael J. McShane
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
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Štícha M, Kaliba D, Jelínek I, Poláková J. Analytical study of rhenium complexes with pyrogallol and catechol. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-016-0088-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Synthesis and characterization of rhenium complexes of 1,2,3-trihydroxybenzene as potential antitumor agents. TRANSIT METAL CHEM 2017. [DOI: 10.1007/s11243-017-0124-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kumari R, Nath M. Tri- and diorganotin(IV) derivatives of non-steroidal anti-inflammatory drug sulindac: Characterization, electronic structures (DFT), DNA binding and plasmid cleavage studies. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3661] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ranjana Kumari
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee 247667 India
| | - Mala Nath
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee 247667 India
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Billing C, Cukrowski I. Application of Protocols Devised to Study Bi(III) Complex Formation by Voltammetry: The Bi(III)-Picolinic Acid System. J Phys Chem B 2016; 120:12972-12980. [PMID: 27959572 DOI: 10.1021/acs.jpcb.6b10522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bi(III) coordination chemistry has been largely neglected due to the difficulties faced when studying these systems even though Bi(III) is used in various medicinal applications. This study of the Bi(III)-picolinic acid system by voltammetry applies the rigorous methodologies already developed to enable the study of Bi(III) systems starting in very acidic solutions to prevent precipitation. This includes calibrating the glass electrode accurately at these low pHs, compensating for the diffusion junction potential below pH 2 and determining the reduction potential of uncomplexed Bi(III) which cannot be directly measured. The importance of including nitrate from the background electrolyte as a competing species is highlighted, especially for data acquired below pH ∼ 2. From analysis of the voltammetric data, it was not clear whether a ML3OH species formed in solution or whether it was a combination of ML4 and ML4OH. Information from crystal structures and electrospray ionization-mass spectrometry measurements was thus used to propose the most probable species model. The log β values determined were 7.77 ± 0.07 for ML, 13.89 ± 0.07 for ML2, 18.61 ± 0.01 for ML3, 22.7 ± 0.2 for ML4, and 31.4 ± 0.2 for ML4OH. Application of these methodologies thus opens the door to broaden our understanding of Bi(III) complexation.
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Affiliation(s)
- Caren Billing
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand , P.O. Wits, Johannesburg, 2050, South Africa
| | - Ignacy Cukrowski
- Department of Chemistry, University of Pretoria , Pretoria, 0002, South Africa
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Wang WY, Zhao XF, Ju XH, Wang Y, Wang L, Li SP, Li XD. Novel morphology change of Au-Methotrexate conjugates: From nanochains to discrete nanoparticles. Int J Pharm 2016; 515:221-232. [DOI: 10.1016/j.ijpharm.2016.10.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/04/2016] [Accepted: 10/09/2016] [Indexed: 01/14/2023]
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Pauwels B, Boydens C, Vanden Daele L, Van de Voorde J. Ruthenium-based nitric oxide-donating and carbon monoxide-donating molecules. J Pharm Pharmacol 2016; 68:293-304. [DOI: 10.1111/jphp.12511] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/29/2015] [Indexed: 01/10/2023]
Abstract
Abstract
Objectives
Over the past few years, the use of metallocomplexes for medical purposes has considerably grown. Because of its favourable characteristics, ruthenium has taken a significant place in this expanding field of research. Several ruthenium-containing metal compounds have been developed as delivery agents of physiological important molecules such as nitric oxide (NO) and carbon monoxide (CO).
Key findings
This review focuses on the (vaso)relaxant capacity of ruthenium-based NO-donating and CO-donating molecules in view of their potential usefulness in the treatment of cardiovascular diseases and erectile dysfunction.
Summary
Ruthenium seems to be a valuable candidate for the design of NO-donating and CO-donating molecules. To date, ruthenium remains of interest in drug research as the search for new alternatives is still necessary.
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Affiliation(s)
- Bart Pauwels
- Department of Pharmacology, Ghent University, Ghent, Belgium
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Daşbaşı T, Kartal Ş, Saçmacı Ş, Ülgen A. Dispersive Liquid-Liquid Microextraction of Bismuth in Various Samples and Determination by Flame Atomic Absorption Spectrometry. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:6802646. [PMID: 26881186 PMCID: PMC4737044 DOI: 10.1155/2016/6802646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 06/05/2023]
Abstract
A dispersive liquid-liquid microextraction method for the determination of bismuth in various samples by flame atomic absorption spectrometry is described. In this method, crystal violet was used as counter positive ion for BiCl4 (-) complex ion, chloroform as extraction solvent, and ethanol as disperser solvent. The analytical parameters that may affect the extraction efficiency like acidity of sample, type and amount of extraction and disperser solvents, amount of ligand, and extraction time were studied in detail. The effect of interfering ions on the analyte recovery was also investigated. The calibration graph was linear in the range of 0.040-1.00 mg L(-1) with detection limit of 4.0 μg L(-1) (n = 13). The precision as relative standard deviation was 3% (n = 11, 0.20 mg L(-1)) and the enrichment factor was 74. The developed method was applied successfully for the determination of bismuth in various water, pharmaceutical, and cosmetic samples and the certified reference material (TMDA-64 lake water).
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Affiliation(s)
- Teslima Daşbaşı
- Gemerek Vocational High School, Department of Food Technology, Cumhuriyet University, 58840 Sivas, Turkey
| | - Şenol Kartal
- Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey
| | - Şerife Saçmacı
- Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey
| | - Ahmet Ülgen
- Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey
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Reddy B. VP, Mukherjee S, Mitra I, Misra K, Sengupta PS, Linert W, Bose K JC, Ghosh GK, Moi SC. An experimental and theoretical approach on the kinetics and mechanism for the formation of a four-membered (S, S) chelated Pt(ii) complex. RSC Adv 2016. [DOI: 10.1039/c5ra21161a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A biomolecular substitution reaction on a Pt(ii) complex by a dithiocarbamate derivative has been studied experimentally and theoretically, and the resultant product complex is a four-membered (S, S) chelate possessing cytotoxic properties.
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Affiliation(s)
| | - Subhajit Mukherjee
- Department of Chemistry
- National Institute of Technology
- Durgapur-713209
- India
| | - Ishani Mitra
- Department of Chemistry
- National Institute of Technology
- Durgapur-713209
- India
| | - Koyel Misra
- Department of Chemistry
- National Institute of Technology
- Durgapur-713209
- India
| | | | - Wolfgang Linert
- Institute of Applied Synthetic Chemistry
- Vienna University of Technology
- Vienna
- Austria
| | - J. C. Bose K
- Department of Bio-Technology
- National Institute of Technology
- Durgapur-713209
- India
| | - Goutam Kr. Ghosh
- Department of Chemistry
- National Institute of Technology
- Durgapur-713209
- India
| | - Sankar Ch. Moi
- Department of Chemistry
- National Institute of Technology
- Durgapur-713209
- India
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Štícha M, Jelínek I, Poláková J, Kaliba D. Characterization of Rhenium(V) Complexes with Phenols Using Mass Spectrometry with Selected Soft Ionization Techniques. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1038552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Li X, Fang C, Zong Z, Cui L, Bi C, Fan Y. Synthesis, characterization and anticancer activity of two ternary copper(ІІ) Schiff base complexes. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Ingle SA, Kate AN, Kumbhar AA, Khan AA, Rao SS, Gejji SP. Synthesis and biological evaluation of copper(ii) pyrenethiosemicarbazone. RSC Adv 2015. [DOI: 10.1039/c5ra00020c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A fluorescent Cu(ii) pyrenethiosemicarbazone complex exhibits enhanced DNA-cleavage and cytotoxicity on photoexcitation.
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Affiliation(s)
- Suwarna A. Ingle
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Anup N. Kate
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Anupa A. Kumbhar
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Ayesha A. Khan
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Soniya S. Rao
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Shridhar P. Gejji
- Department of Chemistry
- Savitribai Phule Pune University
- Pune-411007
- India
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Reddy ER, Trivedi R, Sarma AVS, Sridhar B, Anantaraju HS, Sriram D, Yogeeswari P, Nagesh N. Sugar-boronate ester scaffold tethered pyridyl-imine palladium(ii) complexes: synthesis and their in vitro anticancer evaluation. Dalton Trans 2015; 44:17600-16. [DOI: 10.1039/c5dt03266k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The anticancer activity of sugar-boronate ester containing palladium(ii) complexes is reported.
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Affiliation(s)
- Eda Rami Reddy
- Inorganic and Physical Chemistry Division
- CSIR-IICT
- Hyderabad-500007
- India
| | - Rajiv Trivedi
- Inorganic and Physical Chemistry Division
- CSIR-IICT
- Hyderabad-500007
- India
| | | | | | | | - Dharmarajan Sriram
- Department of Pharmacy
- Birla Institute of Technology & Science – Pilani
- Hyderabad 500 078
- India
| | - Perumal Yogeeswari
- Department of Pharmacy
- Birla Institute of Technology & Science – Pilani
- Hyderabad 500 078
- India
| | - Narayana Nagesh
- CSIR-Centre for Cellular and Molecular Biology
- Hyderabad-500 007
- India
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Lammer AD, Cook ME, Sessler JL. Synthesis and anti-cancer activities of a water soluble gold(III) porphyrin. J PORPHYR PHTHALOCYA 2015; 19:398-403. [PMID: 25914517 PMCID: PMC4407279 DOI: 10.1142/s1088424615500236] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Gold(III) compounds continue to be explored for their potential utility as anticancer agents. A recognized limitation is the reactivity of gold(III), which is typically reduced to the more labile gold(I) state under physiological conditions. The use of porphyrins can overcome this problem. However, to date the stabilization provided by the use a strongly chelating porphyrin is offset by the poor solubility of the resulting complex in aqueous media. In this work, we describe the synthesis and in vitro anti-cancer activity of a gold(III)porphyrin complex with relatively good aqueous solubility. As judged from standard antiproliferation assays, this complex displays an IC50 of 9 μM for the A2780 human ovarian cancer cell line. This is a higher level of potency than displayed by two related control systems.
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Affiliation(s)
- Aaron D. Lammer
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th Street-A5300, Austin, TX 78712-1224, USA
| | - Melissa E. Cook
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th Street-A5300, Austin, TX 78712-1224, USA
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Li X, Bi CF, Fan YH, Zhang X, Meng XM, Cui LS. Synthesis, crystal structure and anticancer activity of a novel ternary copper(II) complex with Schiff base derived from 2-amino-4-fluorobenzoic acid and salicylaldehyde. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hobman JL, Crossman LC. Bacterial antimicrobial metal ion resistance. J Med Microbiol 2014; 64:471-497. [PMID: 25418738 DOI: 10.1099/jmm.0.023036-0] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 11/17/2014] [Indexed: 01/23/2023] Open
Abstract
Metals such as mercury, arsenic, copper and silver have been used in various forms as antimicrobials for thousands of years with until recently, little understanding of their mode of action. The discovery of antibiotics and new organic antimicrobial compounds during the twentieth century saw a general decline in the clinical use of antimicrobial metal compounds, with the exception of the rediscovery of the use of silver for burns treatments and niche uses for other metal compounds. Antibiotics and new antimicrobials were regarded as being safer for the patient and more effective than the metal-based compounds they supplanted. Bacterial metal ion resistances were first discovered in the second half of the twentieth century. The detailed mechanisms of resistance have now been characterized in a wide range of bacteria. As the use of antimicrobial metals is limited, it is legitimate to ask: are antimicrobial metal resistances in pathogenic and commensal bacteria important now? This review details the new, rediscovered and 'never went away' uses of antimicrobial metals; examines the prevalence and linkage of antimicrobial metal resistance genes to other antimicrobial resistance genes; and examines the evidence for horizontal transfer of these genes between bacteria. Finally, we discuss the possible implications of the widespread dissemination of these resistances on re-emergent uses of antimicrobial metals and how this could impact upon the antibiotic resistance problem.
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Affiliation(s)
- Jon L Hobman
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Lisa C Crossman
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
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Ocakoglu K, Er Ö, Yurt Lambrecht F, Yılmaz Süslüer S, Kayabasi C, Gündüz C, Yılmaz O. Evaluation of cancer imaging potential and photodynamic therapy efficacy of copper (II) benzyloxypheophorbide-a. J Drug Target 2014; 23:89-95. [DOI: 10.3109/1061186x.2014.958845] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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39
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Zhang P, Bi C, Schmitt SM, Li X, Fan Y, Zhang N, Dou QP. Metal-based 2,3-indolinedione derivatives as proteasome inhibitors and inducers of apoptosis in human cancer cells. Int J Mol Med 2014; 34:870-9. [PMID: 25017797 PMCID: PMC4121346 DOI: 10.3892/ijmm.2014.1838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 05/19/2014] [Indexed: 01/29/2023] Open
Abstract
Proliferation and apoptotic pathways are tightly regulated in cells by the ubiquitin-proteasome system (UPS). Alterations in the UPS may result in cellular transformation or other pathological conditions. The proteasome is indeed often found to be overactive in cancer cells. It has been reported that 2,3-indolinedione (L), which exists in marine organisms, as well as in mammals, is a proteasome inhibitor. Studies have shown that metal-based complexes inhibit proteasome activity and induce apoptosis in certain human cancer cells. In the current study, we synthesized six novel metal-based complexes with derivatives of 2,3-indolinedione: [Cd (C15H11O3N2) (CH3COO)] (C1), [Cd (C15H11O2N2) (CH3COO)] (C2), [Co (C15H9O4N2) (CH3COO)] (C3), [Co (C15H11O2N2) (CH3COO)] (C4), [Zn (C19H14O3N3) (CH3COO)] (C5) and [Zn (C17H13O3N2) (CH3COO)] (C6). We sought to characterize and assess the proteasome inhibitory and anti-proliferative effects of these metal-based complexes in human breast (MDA-MB-231) and prostate (LNCaP and PC-3) cancer cells, in order to determine whether specific structures contribute to the inhibition of tumor proteasome activity and the induction of apoptosis. The results revealed that the complexes, C1, C3 and C5, but not their counterparts, C2, C4 and C6, inhibited the chymotrypsin-like activity of the human cancer cellular 26S proteasome; in addition, these complexes promoted the accumulation of the proteasome target protein, Bax, inhibited cell growth and induced apoptosis in a concentration- and time-dependent manner due to their unique structures. Our data suggest that the study of metal-based complexes, including aromatic ring structures with electron-attracting groups, may be an interesting research direction for the development of anticancer drugs.
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Affiliation(s)
- Pengfei Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Caifeng Bi
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Sara M Schmitt
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
| | - Xin Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Yuhua Fan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Nan Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Q Ping Dou
- Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
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40
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Joseph D, Geckeler KE. Synthesis of highly fluorescent gold nanoclusters using egg white proteins. Colloids Surf B Biointerfaces 2014; 115:46-50. [DOI: 10.1016/j.colsurfb.2013.11.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 11/08/2013] [Accepted: 11/11/2013] [Indexed: 10/26/2022]
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41
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Metal Species in Biology: Bottom-Up and Top-Down LC Approaches in Applied Toxicological Research. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/801840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Since the inception of liquid chromatography (LC) more than 100 years ago this separation technique has been developed into a powerful analytical tool that is frequently applied in life science research. To this end, unique insights into the interaction of metal species (throughout this manuscript “metal species” refers to “toxic metals, metalloid compounds, and metal-based drugs” and “toxic metals” to “toxic metals and metalloid compounds”) with endogenous ligands can be obtained by using LC approaches that involve their hyphenation with inductively coupled plasma-based element specific detectors. This review aims to provide a synopsis of the different LC approaches which may be employed to advance our understanding of these interactions either in a “bottom-up” or a “top-down” manner. In the “bottom-up” LC-configuration, endogenous ligands are introduced into a physiologically relevant mobile phase buffer, and the metal species of interest is injected. Subsequent “interrogation” of the on-column formed complex(es) by employing a suitable separation mechanism (e.g., size exclusion chromatography or reversed-phase LC) while changing the ligand concentration(s), the column temperature or the pH can provide valuable insight into the formation of complexes under near physiological conditions. This approach allows to establish the relative stability and hydrophobicity of metal-ligand complexes as well as the dynamic coordination of a metal species (injected) to two ligands (dissolved in the mobile phase). Conversely, the “top-down” analysis of a biological fluid (e.g., blood plasma) by LC (e.g., using size exclusion chromatography) can be used to determine the size distribution of endogenous metalloproteins which are collectively referred to as the “metalloproteome”. This approach can provide unique insight into the metabolism and the plasma protein binding of metal species, and can simultaneously visualize the dose-dependent perturbation of the metalloproteome by a particular metal species. The concerted application of these LC approaches is destined to provide new insight into biochemical processes which represent an important starting point to advance human health in the 21st century.
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Synthesis, Characterization, and Antibacterial Studies of Pd(II) and Pt(II) Complexes of Some Diaminopyrimidine Derivatives. Bioinorg Chem Appl 2013; 2013:549549. [PMID: 23573071 PMCID: PMC3610396 DOI: 10.1155/2013/549549] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 01/21/2013] [Accepted: 02/04/2013] [Indexed: 11/17/2022] Open
Abstract
Pd(II) and Pt(II) complexes of trimethoprim and pyrimethamine were synthesized and characterized by elemental analysis, UV-Vis, FTIR, and NMR spectroscopy. The complexes are formulated as four coordinate square planar species containing two molecules of the drugs and two chloride or thiocyanate ions. The coordination of the metal ions to the pyrimidine nitrogen atom of the drugs was confirmed by spectroscopic analyses. The complexes were screened for their antibacterial activities against eight bacterial isolates. They showed varied activities with the active metal complexes showing more enhanced inhibition than either trimethoprim or pyrimethamine. The Pd(II) complexes of pyrimethamine showed unique inhibitory activities against P. aeruginosa and B. pumilus, and none of the other complexes or the drugs showed any activity against these bacteria isolates. The MIC and MBC determinations revealed that these Pd(II) complexes are the most active. Structure activity relationship showed that Pt(II) complexes containing chloride ions are more active, while for Pd(II) complexes containing thiocyanate ions showed more enhanced activity than those containing chloride ions.
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Ajibade PA, Zulu NH, Oyedeji AO. Synthesis, Characterization, and Antibacterial Studies of Some Metal Complexes of Dialkyl Thiourea: The X-Ray Single Crystal Structure of [CoCl2(detu)2]. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/15533174.2012.741179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Peter A. Ajibade
- a Department of Chemistry , University of Fort Hare , Alice , South Africa
| | | | - Adebola O. Oyedeji
- b Department of Chemistry and Chemical Technology , Walter Sisulu University , Mthatha , South Africa
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Platinum and palladium bis(diphenylphosphino)ferrocene (dppf) complexes with heterocyclic N-acetamide ligands: Synthesis and molecular structures of [MCl(sac)(κ2-dppf)] (M=Pt, Pd, sac=saccharinate), [PtCl(ata)(κ2-dppf)] and [Pt(ata)2(κ2-dppf)] (ataH=N-(2-thiazolyl)acetamide). Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Main-Group Medicinal Chemistry Including Li and Bi*. COMPREHENSIVE INORGANIC CHEMISTRY II 2013. [PMCID: PMC7152213 DOI: 10.1016/b978-0-08-097774-4.00338-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Main-group element compounds were among the first developed in the modern era as pharmaceutical preparations for the treatment of a wide variety of human ailments; it is now recognized that many of these elements exist in traditional medicine of many societies, for example, arsenic. The use of main-group element compounds in contemporary medicine continues for the treatment of, for example, depression (Li), stomach ulcers (Bi), cancer (As and Ga), and leishmaniasis (Sb). Not surprisingly, new compounds of these elements, and other main-group elements, continue to be investigated for their potential use in new therapies. In this chapter, the use of main-group elements as therapeutic agents is outlined and also, where understood, comments on biological targets and mechanisms of action. Further, key advances in new potential applications of main-group element compounds in medicine are evaluated.
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Kaushik NK, Mishra A, Ali A, Adhikari JS, Verma AK, Gupta R. Synthesis, characterization, and antibacterial and anticancer screening of {M(2+)-Co (3+)-M (2+)} and {Co (3+)-M (2+)} (M is Zn, Cd, Hg) heterometallic complexes. J Biol Inorg Chem 2012; 17:1217-30. [PMID: 23001051 DOI: 10.1007/s00775-012-0937-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 09/01/2012] [Indexed: 01/28/2023]
Abstract
The cobalt(III) complexes Et(4)N[Co(L(1))(2)] and [Co(L(2))(3)] [H(2)L(1) is 2,6-bis(N-(2-pyridyl)carbamoyl)pyridine and HL(2) is 2-(N-(2-pyridyl)carbamoyl)pyridine] were used as the building blocks for preparing a series of {M(2+)-Co(3+)-M(2+)} (where M is Zn, Cd, or Hg) and {Co(3+)-M(2+)} (where M is Zn or Cd) heterometallic complexes. All heterometallic complexes were characterized using a host of spectroscopic methods (IR, NMR, and UV/vis spectroscopy and mass spectrometry), elemental analysis, and conductivity measurements. One of the representative compounds, {Hg(2+)-Co(3+)-Hg(2+)}, was characterized crystallographically, and it was revealed that two Hg(II) ions are coordinated within the clefts created by the building block Et(4)N[Co(L(1))(2)]. The results of screening for anticancer activity against the human brain tumor U87 cell line and antibacterial activity against a range of resistant (Pseudomonas aeruginosa and Proteus vulgaris) as well as standard (Staphylococcus aureus SA 96, P. aeruginosa MTCC 1688, Klebsiella planticola MTCC 2272, and Escherichia coli T7) bacterial strains indicate promising activities. Notably, the observed activity was found to vary with the type of building block and the secondary metal ion present in the heterometallic complex. Treatment-induced cell death [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, MTT and macrocolony assay), growth inhibition, cytogenetic damage, cell cycle delay, and apoptosis were studied as the parameters for cellular response.
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Zhang N, Fan YH, Zhang Z, Zuo J, Zhang PF, Wang Q, Liu SB, Bi CF. Syntheses, crystal structures and anticancer activities of three novel transition metal complexes with Schiff base derived from 2-acetylpyridine and l-tryptophan. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.05.022] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hellebust A, Richards-Kortum R. Advances in molecular imaging: targeted optical contrast agents for cancer diagnostics. Nanomedicine (Lond) 2012; 7:429-45. [PMID: 22385200 DOI: 10.2217/nnm.12.12] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Over the last three decades, our understanding of the molecular changes associated with cancer development and progression has advanced greatly. This has led to new cancer therapeutics targeted against specific molecular pathways; such therapies show great promise to reduce mortality, in part by enabling physicians to tailor therapy for patients based on a molecular profile of their tumor. Unfortunately, the tools for definitive cancer diagnosis - light microscopic examination of biopsied tissue stained with nonspecific dyes - remain focused on the analysis of tissue ex vivo. There is an important need for new clinical tools to support the molecular diagnosis of cancer. Optical molecular imaging is emerging as a technique to help meet this need. Targeted, optically active contrast agents can specifically label extra- and intracellular biomarkers of cancer. Optical images can be acquired in real time with high spatial resolution to image-specific molecular targets, while still providing morphologic context. This article reviews recent advances in optical molecular imaging, highlighting the advances in technology required to improve early cancer detection, guide selection of targeted therapy and rapidly evaluate therapeutic efficacy.
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Affiliation(s)
- Anne Hellebust
- Rice University, Bioengineering Department, 6100 Main Street, Bioengineering, MS 142, Houston, TX 77005-1892, USA
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James ML, Gambhir SS. A molecular imaging primer: modalities, imaging agents, and applications. Physiol Rev 2012; 92:897-965. [PMID: 22535898 DOI: 10.1152/physrev.00049.2010] [Citation(s) in RCA: 698] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Molecular imaging is revolutionizing the way we study the inner workings of the human body, diagnose diseases, approach drug design, and assess therapies. The field as a whole is making possible the visualization of complex biochemical processes involved in normal physiology and disease states, in real time, in living cells, tissues, and intact subjects. In this review, we focus specifically on molecular imaging of intact living subjects. We provide a basic primer for those who are new to molecular imaging, and a resource for those involved in the field. We begin by describing classical molecular imaging techniques together with their key strengths and limitations, after which we introduce some of the latest emerging imaging modalities. We provide an overview of the main classes of molecular imaging agents (i.e., small molecules, peptides, aptamers, engineered proteins, and nanoparticles) and cite examples of how molecular imaging is being applied in oncology, neuroscience, cardiology, gene therapy, cell tracking, and theranostics (therapy combined with diagnostics). A step-by-step guide to answering biological and/or clinical questions using the tools of molecular imaging is also provided. We conclude by discussing the grand challenges of the field, its future directions, and enormous potential for further impacting how we approach research and medicine.
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Affiliation(s)
- Michelle L James
- Molecular Imaging Program, Department of Radiology, Stanford University, Palo Alto, CA 94305, USA
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50
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Bi S, Wang A, Bi C, Fan Y, Xiao Y, Liu S, Wang Q. Coordination polymer of zinc based on chiral non-racemic trans-N,N′-bis-(2-hydroxy-1-naphthalidehydene)-(1R,2R)-cyclohexa-nediamine: Synthesis, crystal structure, novel coordinational models and anticancer activity. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2011.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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